John Curl's Blowtorch preamplifier part III

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Aren't you the one who just wrote for example: "the simple fact to connect electrically a computer to the ground of my amplifier ruin my system." ?

Ruin and total destruction are pretty much synonyms. So come on...
English is not my native language, i would had wrote "reduced quality", yes. But after so huge efforts during so many years to improve some aspects that, may-be others can think insignificant, like micro dynamic, separation etc..., I consider, indeed this as a "destruction".
During recording session, many musicians insist on redoing a passage that others find perfect, saying it's "totally bad. " ;-)
 
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From what I have read, the Orange Drop and similar caps are made by winding on a hollow bobbin, then squashing them. This leaves the construction less tightly wound than straight wound (cylindrical caps).

Wouldn't this result in worse distortion for the orange drop vs cylindrical caps?
 
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It's still curious. Whenever some try to talk about his point of view on the audibility of something on this forum, he immediately receives a drop of insulting answers from the "Objectivists".

No one minds opinions. It's when a subjective point of view is asserted as being correct, or that someone that cannot concur with the subjective point of view is inferior, lacks "golden ears", that the fur tends to fly.
 
I will give that a try. Many classical recording it's clear that compression has been added to keep the crest factor down.

I believe it is not the case of this recording. The dynamics is stunning, esp. Track01.
 

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Sorry, you can decide what is audible or not only with your ears. Distortion with continuous signal is not the only think your ears+brain is sensible to.
If the distortion of a cap is higher than what I consider as acceptable, I will not even listen to. What about you ?
It as been the previous object of several vehement discussions here. All along with topologies, LTP vs Current feedback etc.
On my side, "I tend to prefer" FETs for output devices. because they are fast and no secondary breakdown. But I agree it is sad that they become hard to provision

By the way, nobody pretended: "bipolar electrolytic are horrible". The discussion was painful enough to not aggravate it with caricatures.

I'm sorry, if I could use human hearing to get 1-10ppm sensitivity, I will put them to work towards my actual work in medical diagnostics. Where we actually have to show real results. I might as well say that I can hear the tidal effects on the ocean roughy 150 km from here, as I'm sure it has a greater than 1ppm atmospheric effect. What is lost in these discussions is that "in my experience" is so unreliable and people say utterly ridiculous things without remotely grounding themselves in a question "is this even remotely reasonable?" Then you get parrotting and people convinced by suggestion and it takes life of its own. Look at your own hyperbole about sound cards, and you want to complain about caricatures?! Also I wrote that in the context of humor.

The ratio of ops discussion to the humble coupling cap is quite lopsided towards the one that has way less effect overall. It's also way easier to "roll" non-critical caps than redesign ops and compensation schemes. That's a comment about humans more than amplifiers.

The entire field of audio would be boring if done with sober engineering intent and honest, well informed, scientific inquiry into our capability. The amount of FUD running around instead is beyond obnoxious.
 
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No. All sorts of rationalizations ----- I dont use dblt only because it doesnt work for ME. I have to listen to my system and I do not take advice on what something does or does not sound like or will sound like. I listen and decide for myself on my own system, only.

I use measurements and listening both. In case of doubt, I will use the test gear results.

When I cannot test (not likely, any more), I will err on the conservative side and make it best I can just as insurance.

Then it becomes a challenge to myself to see how good I can do.

IMHO, I would get off this thd trip.... as the only argument to perfection or not. There are too many exceptions to that.... one -- 2 PA each below .001% at any freq but one has high Zo out and the other lower Zo. There will be freq response variations when connected to cable/speakers that are significant.

Too many other things outside of THD are being ignored (deliberately?).


THx-RNMarsh
 
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The best chiefs are usually celebrated by a huge majority of their customers. And I think it as good thing that several chiefs can
share various brand of customers.
Well, if you prefer, we can take musicians as an other example. Some have a large popular success, but no one is universally appreciated neither. Tastes and colors.



By that metric, McDonald's has the best chefs in the world!
 
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